There's a lot to like about this piece. The juxtaposition of ancient and new technology, the smallness of man, the sense of motion, the lighting, detailed and rich textures, and the depth of field. All this comes together in an impressive piece that caught and held my attention enough to hit the "critique" button! So, kudos there.

Beyond that, I think the improvements would be minor. For vision/impact , after I hit the piece and enjoyed it...I didn't leave with any sense of message or what it was about. Some pieces are 100% visual saturation, some have a message. If there was more of a message in this one, I missed it. Nothing wrong, but to get that "5th star" there has to be something that stays with me when I walk away from the art...it could be something about the situation, a chain of thought invoked, or maybe some aspect is so visually striking, that I can't get it out of my mind.

For technique - there are just a few things that struck me as curious: 1) the scaling of the disc or maybe how it is treated makes it look like a city, but there doesn't appear to be enough height to make its mass believable compared to the person on the hover craft. 2) the 2 crafts on the edge have a sense of motion, but the one in the center is missing the blur, making me wonder why it is kicking up so much dust (maybe he just came to stop or is slowing down), 3) There's some lighting on the foreground "landing gear" that makes it look thin - like this massive disc is supported by a thin sheet of metal, which in turn has a heavy pad planted into the earth. The physics of that for some reason bugs me.

All this feedback could just be "interpretation." Ultimately this critique is less a judgement of your talent, and more just feedback on how I absorbed this creation...You requested a critique and I'm just candidly sharing what I see. No, I do not smoke crack Yes, I do think you are insanely talented and really enjoy seeing your works pop-up on my watch list.

I am really interested in getting into more complex digital art but I don't know what is practical for me to try to learn with the limited time I have. Is the program you used something a hobbyist could learn decently in spare time? Or should I stick to using paint lol?

Woah, that looks very awesome, there's only one slight thing not being quite right in my eyes, the right vehicle that is very close is just a leeeeeeeeeetle bit to much sideblurred. Well it might not be but it feels like it's just a little bit too much.